1. A car bought for $20,000. Its value depreciates by 10% each year for 3 years. What is the car's worth after3 years? 2. Find the perimeter of a circle whose radius is 3.5cm. (Take pi = 22/7) 3. The volume of a cone is 1540cm³. If its radius is 7cm, calculate the height of the cone. (Take pi = 22/7) 4. What is the coefficient of b in the expression b² - 5b +18 5. Expand (x +2) (9 - x) 7. Find x and y in the simultaneous equations. x + y = 4 3x + y = 8 8. Factorize a² +3ab - 5ab - 15b² 9. The bearing of a staff room from the assembly ground is 195degrees, what is the bearing of the assembly ground from the staff room?

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

1. consider the case in which air fills air shocks on a truck trailer. the pressure in the shocks is 2 mpa. the temperature is 300 k. the diameter of the shock piston is 10 cm and the initial length of the cylindrical cavity containing the compressed air is 40 cm. a. the truck is gradually loaded over a period of a day in a static setting. the temperature is held constant for the atmosphere and thus for the gas shock. calculate the compressibility of the air in the shock for this condition when the truck is initially being loaded. b. if the shocks were loaded in a dynamic setting by driving over bumps, what would be the compressibility? state your assumption. c. what is the initial load on the shock if the shock is in an atmospheric 100 kpa? d. if the shock is compressed using the process described in part a, and the air shock compressed air cavity length decreases to 20 cm, what is the additional load applied to the shock?

Which of the following is an example of motion in two dimensions?